Mario Martínez has nine losses against eight opponents on his boxing record. For a list of Martínez's best fights, refer to "Best fights of Mario Martínez".
On August 19, 1991 Mario Martínez faced off against Ramon Marchena Jr at age 26. He was coming in with a record of 49-9-2 (30). Martínez lost the fight via 8th-round TKO.
On March 2, 1991 Mario Martínez fought Dingaan Thobela in a lightweight world-title fight for Thobela's WBO title. Martínez was 25 years old and with a record of 48-8-2 (29), and Thobela was 24 years old and with a record of 3-0 (2). Martínez lost the fight via 12-round unanimous decision.
On July 16, 1990 Mario Martínez faced off against Miguel Gonzalez at age 24. He was coming in with a record of 48-7-2 (29). Martínez lost the fight via 10-round points decision.
On November 24, 1989 Mario Martínez faced off against Jeff Fenech at age 24. He was coming in with a record of 47-6-2 (29), and Fenech was 25 years old and with a record of 23-0 (18). Martínez lost the fight via 12-round unanimous decision.
On February 25, 1989 Mario Martínez fought Azumah Nelson in a super-featherweight world-title fight for Nelson's WBC title. Martínez was 23 years old and with a record of 47-5-2 (29), and Nelson was 30 years old and with a record of 29-1 (21). Martínez lost the fight via 12th-round TKO.
On February 29, 1988 Mario Martínez fought Azumah Nelson in a super-featherweight world-title fight for the WBC title. Martínez was 22 years old and with a record of 46-4-2 (29), and Nelson was 29 years old and with a record of 26-1 (19). Martínez lost the fight via 12-round split decision.
On November 7, 1985 Mario Martínez faced off against Roger Mayweather at age 20. He was coming in with a record of 38-3-2 (22), and Mayweather was 24 years old and with a record of 21-3 (14). Martínez lost the fight via 10-round split decision.
On September 13, 1984 Mario Martínez fought Julio Cesar Chavez in a super-featherweight world-title fight for the WBC title. Martínez was 19 years old and with a record of 33-2-2 (20), and Chavez was 22 years old and with a record of 43-0 (37). Martínez lost the fight via 8th-round TKO.
On June 6, 1981 Mario Martínez faced off against Rosendo Alonso at age 15. He was coming in with a record of 14-1-1 (8). Martínez lost the fight via 10-round points decision.
